Table 23: Egress Sap Tagging Rules; Figure 27: Ethernet Frame Representations - Alcatel-Lucent 7705 Service Manual

Table 24
packet types. In
shown in each cell, and the text in the cell represents the packet format.
.
7705 SAR OS Services Guide
(1)
Egress SAP Type
Null
Dot1q
Notes:
1. Ingress SAP type is configured at the port level.
2. If the SAP tag is 0, then no VLAN tag is pushed.
3. If the SAP tag is 0, then only the pop operation is performed.
shows the VLAN ID translation operation (from ingress to egress) for the various
Table 24, the following abbreviations are used to simplify the operations
• The packet payload at the service level is shown in parenthesis. It includes any SAP
headers.
• CV represents the Customer VLAN tag, where CV-i and CV-x represent the ingress
VLAN tag, and CV-e represents egress VLAN tag.
• PV represents the Provider VLAN tag, where PV can be either the customer-
configured VLAN tag (that is, CV-x) or a provider-configured VLAN tag (that is,
configured using the
• PW represents the MPLS label, which consists of a PW label and a tunnel label.
• Dots in packet formats represent the places in an Ethernet frame where labels or tags
are added to a packet.
representation of a packet format, where the packet starts on the right-hand side.

Figure 27: Ethernet Frame Representations

Payload.CV-i
Payload

Table 23: Egress SAP Tagging Rules

VC Type (Epipe)
Raw (Ethernet)
No operation
(2)
Push (SAP tag)
spoke-sdp>vlan-vc-tag
Figure 27 shows two examples using the more familiar
Payload.CV-i.PW
CV-i Payload CV-i L2
VLAN VLAN
tag tag
VLL Services
Tagged (VLAN)
Pop (VC tag)
Pop (VC tag)
(3)
Push (SAP tag)
CLI command)
L1
PW Tunnel
label label
MPLS tunnel
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